提出采用IRS作为信息媒介来承载含有车牌信息的微波二维码.具体来说,IRS能够通过调节其元素阵列的振幅和相位,形成一幅动态的位图图像.因此IRS可以用于显示微波二维码,而收发机能够通过辐射电磁波接收来自IRS反射信号以此获取二维码信息.基于该想法,首先建立了基于1RS的二维码通信系统模型,对一些基本的通信系统运行机制进行了研究:包括信号调制的平均比特误码率推导和二维码在IRS上的实现、传输设计、检测等.仿真显示了系统可实现的通信性能,并证实了基于IRS的微波二维码的可行性.
In this paper,intelligent reflecting surface(IRS)is used as an information medium to carry microwave QR codes containing license plate information.Specifically,RS can form a dynamic bitmap image by adjusting the amplitude and phase of its array of elements.Therefore,IRS can be used to display microwave QR codes,and the transceiver can obtain QR code information by radiating electromagnetic waves and receiving reflected signals from the IRS.Based on this idea,a QR code communication system model based on the IRS is first established,and some basic communication system operation mechanisms are investigated,including the derivation of the average bit error probability for signal modulation,the realization of QR codes on the IRS,transmission design,and detection.Simulations show the achievable communication performance of the system and confirm the feasibility of IRS-based microwave QR codes.